cleaning up no longer needed ui helper methods

ui/src/components/base/ObjectSelect.svelte

@@ -24,9 +24,8 @@
         newKeyOfSelected = CommonHelper.toArray(newKeyOfSelected, true);
 
         let newSelected = [];
-        let allItems = getFlattenItems();
 
-        for (let item of allItems) {
+        for (let item of items) {
             if (CommonHelper.inArray(newKeyOfSelected, item[selectionKey])) {
                 newSelected.push(item);
             }
@@ -48,20 +47,6 @@
 
         keyOfSelected = multiple ? extractedKeys : extractedKeys[0];
     }
-
-    function getFlattenItems() {
-        if (!CommonHelper.isObjectArrayWithKeys(items, ["group", "items"])) {
-            return items; // already flatten
-        }
-
-        // extract items from groups
-        let result = [];
-        for (const group of items) {
-            result = result.concat(group.items);
-        }
-
-        return result;
-    }
 </script>
 
 <Select bind:selected {items} {multiple} {labelComponent} {optionComponent} on:show on:hide {...$$restProps}>

ui/src/components/base/PreviewPopup.svelte

@@ -1,5 +1,4 @@
 <script>
-    import CommonHelper from "@/utils/CommonHelper";
     import OverlayPanel from "@/components/base/OverlayPanel.svelte";
 
     let panel;
@@ -10,15 +9,9 @@
             return;
         }
 
-        CommonHelper.checkImageUrl(newUrl)
-            .then(() => {
-                url = newUrl;
-                panel?.show();
-            })
-            .catch(() => {
-                console.warn("Invalid image preview url: ", newUrl);
-                hide();
-            });
+        url = newUrl;
+
+        panel?.show();
     }
 
     export function hide() {
@@ -33,11 +26,11 @@
         </div>
     </svelte:fragment>
 
-    <img src={url} alt="Preview" />
+    <img src={url} alt="Preview {url}" />
 
     <svelte:fragment slot="footer">
         <a href={url} title="Download" class="link-hint txt-ellipsis">
-            /../{url.substring(url.lastIndexOf("/") + 1)}
+            {url.substring(url.lastIndexOf("/") + 1)}
         </a>
         <div class="flex-fill" />
         <button type="button" class="btn btn-secondary" on:click={hide}>Close</button>